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1.
J Shoulder Elbow Surg ; 28(6): 1154-1158, 2019 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-30770313

RESUMO

BACKGROUND: The ulnar collateral ligament (UCL), consisting of 3 bundles, is the primary medial restraint in the elbow. Recent research has demonstrated that ultrasound is an effective modality to evaluate the medial elbow, whereas stress radiography is standard practice in the measurement of medial elbow laxity. This study (1) compared dynamic ultrasound (USD) with stress radiography in the evaluation of UCL insufficiency and (2) further evaluated the contribution of the anterior bundle of the UCL to medial elbow stability. METHODS: Stress radiographs and USD were used to obtain coronal plane measurements of the medial joint space of 16 cadaveric elbows before and after USD-guided isolated transection of the anterior bundle of the UCL. Measurements were performed with and without a valgus stress applied to the elbows, and gapping of the ulnohumeral joint space was documented. RESULTS: Transection of the anterior bundle of the UCL resulted in 1.5 mm and 1.7 mm of additional gapping in the ulnohumeral joint as measured with stress radiographs and USD, respectively. No differences were recorded in the ulnohumeral gapping measurements between stress radiography and USD. CONCLUSIONS: The lack of difference between measurements reveals USD is as reliable as stress radiography in evaluating the medial ulnohumeral joint space and continuity of the UCL while eliminating radiation exposure and minimizing cost of the diagnostic examination. The increase in ulnohumeral gapping with isolated transection of the anterior bundle of the UCL demonstrates its significant contribution to medial elbow stability.


Assuntos
Ligamento Colateral Ulnar/diagnóstico por imagem , Ligamento Colateral Ulnar/cirurgia , Articulação do Cotovelo/diagnóstico por imagem , Instabilidade Articular/diagnóstico por imagem , Ultrassonografia , Idoso , Idoso de 80 Anos ou mais , Cadáver , Humanos , Masculino , Radiografia/métodos
2.
Br J Biomed Sci ; 75(3): 105-109, 2018 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-29452574

RESUMO

Introduction An association of Helicobacter pylori and common protozoal parasites in patients with abdominal discomfort and chronic diarrhoea is unclear and may be pathological. Materials and methods One hundred and sixty-one patients with diarrhoea were compared to 114 age and sex matched controls. Stool samples were examined by microscopy and DNA extracted for PCR with specific primers for H. pylori and protozoal parasites Blastocystis sp., Entamoeba sp. (Entamoeba histolytica, Entamoeba dispar and Entamoeba moshkovskii) and Giardia duodenalis (G. duodenalis). Results There was a marked difference in the presence of parasites between patients and controls: no parasite 42/75%, one parasite 42/15%, two or more parasites 16/10%, respectively (p < 0.001). Patients with diarrhoea were more likely to be infected with Blastocystis sp (p < 0.001), E. histolytica (p = 0.027) and E moshkovskii (p = 0.003). There was no difference in the frequency of H. pylori (p = 0.528), G duodenalis (p = 0.697) or E dispar (p = 0.425). Thirty-three patients and 27 controls had H. pylori infection. Of these, 22 patients and 6 controls were infected with Blastocystis sp (p = 0.001), 6 patients and no controls were infected with E. histolytica (p = 0.02), whilst 7 patents and 9 controls were infected with E dispar (p = 0.292). Conclusion In this population, diarrhoea is linked to infection with Blastocystis sp, E. histolytica and E moshkoviskii. In H. pylori infection, diarrhoea is linked to Blastocystis sp and E. histolytica infection. These associations may be linked pathogenically.


Assuntos
Doença Crônica/epidemiologia , Diarreia/genética , Infecções por Helicobacter/genética , Helicobacter pylori/genética , Adulto , Idoso , Animais , Diarreia/epidemiologia , Diarreia/microbiologia , Diarreia/parasitologia , Entamoeba histolytica/genética , Entamoeba histolytica/patogenicidade , Fezes/microbiologia , Fezes/parasitologia , Feminino , Giardia lamblia/genética , Giardia lamblia/patogenicidade , Infecções por Helicobacter/epidemiologia , Infecções por Helicobacter/microbiologia , Infecções por Helicobacter/parasitologia , Helicobacter pylori/patogenicidade , Humanos , Masculino , Pessoa de Meia-Idade , Parasitos/genética , Parasitos/patogenicidade , RNA Ribossômico 16S/genética
3.
Epidemiol Infect ; 145(16): 3468-3476, 2017 12.
Artigo em Inglês | MEDLINE | ID: mdl-29143724

RESUMO

B-cell non-Hodgkin lymphoma (B-cell NHL) is the second commonest malignancy in the stomach. We determined the distribution of Helicobacter pylori outer membrane protein Q (HopQ) allelic type, cytotoxin-associated gene (cag)-pathogenicity activity island (cag-PAI) and vacuolation activating cytotoxin A (vacA) genes, respectively, in patients with B-cell NHL. We also compared them with their distribution in non-ulcer dyspepsia (NUD). H. pylori was cultured from gastric biopsy tissue obtained at endoscopy. Polymerase chain reaction was performed. Of 170 patients enrolled, 114 (63%) had NUD and 56 (37%) had B-cell NHL. HopQ type 1 was positive in 66 (58%) in NUD compared with 46 (82%) (P = 0·002) in B-cell NHL; HopQ type 2 was positive in 93 (82%) with NUD compared with 56 (100%) (P < 0·001) in B-cell NHL. Multiple HopQ types were present in 46 (40%) in NUD compared with 46 (82%) (P < 0·001) in B-cell NHL. CagA was positive in 48 (42%) in NUD vs. 50 (89%) (P < 0·001) in B-cell NHL; cagT was positive in 35 (31%) in NUD vs. 45 (80%) (P < 0·001) in B-cell NHL; left end of the cagA gene (LEC)1 was positive in 23 (20%) in NUD vs. 43 (77%) (P < 0·001) in B-cell NHL. VacAs1am1 positive in B-cell NHL in 48 (86%) (P < 0·001) vs. 50 (44%) in NUD, while s1am2 was positive in 20 (17%) in NUD vs. 46 (82%) (P < 0·001) in B-cell NHL. H. pylori strains with multiple HopQ allelic types, truncated cag-PAI evidenced by expression of cagA, cagT and cag LEC with virulent vacAs1 alleles are associated with B-cell NHL development.


Assuntos
Proteínas da Membrana Bacteriana Externa/genética , Ilhas Genômicas/genética , Infecções por Helicobacter , Helicobacter pylori/genética , Linfoma de Células B , Neoplasias Gástricas , Adulto , Idoso , Idoso de 80 Anos ou mais , Estudos de Coortes , Feminino , Infecções por Helicobacter/epidemiologia , Infecções por Helicobacter/microbiologia , Helicobacter pylori/patogenicidade , Humanos , Linfoma de Células B/epidemiologia , Linfoma de Células B/microbiologia , Masculino , Pessoa de Meia-Idade , Neoplasias Gástricas/epidemiologia , Neoplasias Gástricas/microbiologia , Adulto Jovem
4.
Bull Entomol Res ; 107(6): 734-741, 2017 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-28485267

RESUMO

Detrimental effects of ultraviolet (UV) light on living organisms are well understood, little is known about the effects of blue light irradiation. Although a recent study revealed that blue light caused more harmful effects on insects than UV light and blue light irradiation killed insect pests of various orders including Diptera, the effects of blue light on physiology of insects are still largely unknown. Here we studied the effects of blue light irradiation on cuticular melanin in larval and the immune response in adult stage of Bactrocera dorsalis. We also evaluated the effects of blue light exposure in larval stage on various age and mass at metamorphosis and the mediatory role of cuticular melanin in carryover effects of larval stressors across metamorphosis. We found that larvae exposed to blue light decreased melanin contents in their exoskeleton with smaller mass and delayed metamorphosis than insects reared without blue light exposure. Across metamorphosis, lower melanotic encapsulation response and higher susceptibility to Beauveria bassiana was detected in adults that had been exposed to blue light at their larval stage, thereby constituting the first evidence that blue light impaired adult immune function in B. dorsalis as a carryover effect of larval exposure.


Assuntos
Controle de Insetos/métodos , Melaninas/metabolismo , Tephritidae/imunologia , Animais , Beauveria , Terapia de Imunossupressão , Larva/metabolismo , Larva/efeitos da radiação , Tephritidae/metabolismo , Tephritidae/efeitos da radiação
5.
Insect Mol Biol ; 25(1): 32-43, 2016 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-26486729

RESUMO

MicroRNAs (miRNAs) are small noncoding RNAs that regulate various diverse biological processes including insect spermatogenesis. The oriental fruit fly, Bactrocera dorsalis, is one of the most destructive horticultural pests in East Asia and the Pacific region. Although developmental miRNA profiles of B. dorsalis have enriched our knowledge, specific testicular miRNAs in this dipteran species are unexplored. In this study, we identified miRNAs from B. dorsalis testes by deep sequencing, which provided an overview of miRNA expression during spermatogenesis. Small RNA libraries were constructed from the testes of fully mature (FM), immature (IM) and middle-aged (MA) adult flies of B. dorsalis. Small RNA sequencing and data analysis revealed 172 known and 78 novel miRNAs amongst these libraries. Pairwise comparisons of libraries led to the identification of 24, 15 and 14 differentially expressed miRNAs in FM vs. IM, FM vs. MA and IM vs. MA insects, respectively. Using a bioinformatic approach, we predicted 124 target genes against the 13 most differentially expressed miRNAs. Furthermore, the expression patterns of six randomly selected miRNAs (from the 13 most differentially expressed miRNAs) and their putative target genes (from the 124 predicted target genes) were analysed in the testis of B. dorsalis by quantitative real-time PCR, which showed that out of six, four tested miRNAs-mRNAs had an inverse expression pattern and are probably co-regulated. This study is the first comparative profile of the miRNA transcriptome in three developmental stages of the testis, and provides a useful resource for further studies on the role of miRNAs in spermatogenesis in B. dorsalis.


Assuntos
MicroRNAs/metabolismo , Espermatogênese , Tephritidae/metabolismo , Animais , Masculino , Tephritidae/genética , Testículo/metabolismo
6.
J Taibah Univ Med Sci ; 17(3): 506-515, 2022 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-35079243

RESUMO

Objective: Teledentistry conveniently delivers dental care when in-person visits are restricted, such as during the COVID-19 pandemic. This study aimed to assess Saudi Arabian patients' accuracy, perceptions, knowledge, attitudes, and challenges regarding teledentistry used for diagnosis during the COVID-19 pandemic, as well as its accuracy, versus traditional dental visits. Methods: A single-blind, parallel-group randomised controlled trial design was used. The 70 participants were randomised equally into study and control groups. While the control group waited, the study group received teledentistry diagnoses which were compared with baseline clinical examinations retrieved from the UQU dental hospital, Makkah, KSA. After the intervention was completed, all participants answered a questionnaire. Results: There were no significant differences between the groups in knowledge or attitudes regarding teledentistry. However, study group participants had more favourable experiences with teledentistry. They reported good accuracy with diagnosis and recording of their chief complaints (74.3%), number of missing teeth (74.3%), number of filled teeth (71.4%), and oral hygiene status (65.7%). Additionally, moderate accuracy was reported on recording of health complaints (51.4%) and number of decayed teeth (40.?%). The number of decayed teeth and the decayed, missing, and filled teeth (DMF) index scores reported using teledentistry were significantly (p < 0.05) higher than reported in the baseline examinations. Conclusion: Teledentistry is widely accepted by patients and can be efficient for preliminary examinations, particularly during pandemic lockdowns or in more frequently occurring situations such as severe weather conditions, but subsequent clinical examination is necessary for maximally accurate diagnoses.

7.
J Helminthol ; 84(1): 93-7, 2010 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-19627625

RESUMO

The present study aimed to investigate the seasonal epidemiological prevalence of gastro-intestinal nematodes (GINs) of goats with respect to sex and age of the host in the Kashmir valley from 1 February 2005 to 31 January 2007. A total of 1267 goats were examined [faecal examination: 938 (year 1: 470; year 2: 468); gastro-intestinal (GIT) examination: 329 (year 1: 175; year 2: 154)]. The overall prevalence of GIN infection in these animals was 54.3% (year 1: 54.8%; year 2: 53.8%; P = 0.842). The different parasites reported with their respective prevalences (%) were: Haemonchus contortus (48.3); Bunostomum trigonocephalum (30.1); Chabertia. ovina (29.8); Ostertagia circumcincta (29.8); Nematodirus spathiger (25.2); Trichostrongylus spp. (25.1); Oesophagostomum columbianum (23.5); Trichuris ovis (19.0); and Marshallagia marshalli (16.6). The mean maximum prevalence of GIN infection (faecal examination: 75.6 +/- 0.20; GIT examination: 85.3 +/- 0.95), faecal egg counts (2552 +/- 85.7) and average worm burden (333.25 +/- 2.25) were found in the summer and they were lowest in winter (prevalence: faecal examination, 23.2 +/- 0.95; GIT examination, 12.7 +/- 0.20; faecal egg counts: 134.15 +/- 9.15; and average worm burden: 79.8 +/- 52.2), with significant differences between the seasons (P < 0.05). The sex of the hosts was not an important factor influencing the prevalence of GIN infection. With the increase in host age, prevalence of infection decreased significantly (P > or = 0.05). Thus seasonal dynamics and age of the host animals significantly influenced the prevalence of GIN infection. The above findings will be helpful in devising the appropriate control strategies for GINs of goats reared under the traditional husbandry system in temperate agro-climatic conditions in the Kashmir valley as well as in similar climatic zones of other parts of the world.


Assuntos
Doenças das Cabras/parasitologia , Intestinos/parasitologia , Nematoides/isolamento & purificação , Infecções por Nematoides/veterinária , Fatores Etários , Animais , Fezes/parasitologia , Cabras , Interações Hospedeiro-Parasita , Índia , Enteropatias Parasitárias/parasitologia , Enteropatias Parasitárias/veterinária , Masculino , Infecções por Nematoides/parasitologia , Distribuição Aleatória , Estações do Ano , Fatores Sexuais
8.
Int J Pediatr Adolesc Med ; 7(3): 153-154, 2020 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-33094145

RESUMO

We report a 9-year-old female child who presented with fever and focal seizures. The Cerebrospinal Fluid (CSF) analysis was compatible with viral meningoencephalitis and Reverse Transcriptase Polymerase Chain Reaction (RT-PCR) on same sample was positive for dengue virus RNA, serotype 2. The dengue IgM in blood sample was positive on the 8th day of the illness. This case demonstrates the emerging neurological manifestations of dengue infection and the first confirmed pediatric meningoencephalitis reported from Saudi Arabia. In areas where it does exist, dengue should be included in the differential diagnosis of cases of viral meningitis or meningoencephalitis.

9.
Vet Parasitol ; 160(1-2): 83-8, 2009 Mar 09.
Artigo em Inglês | MEDLINE | ID: mdl-19070963

RESUMO

The increasing prevalence of anthelmintic resistant strains of helminths, drug residues in animal products and high cost of conventional anthelmintics has created an interest in studying medicinal plants as an alternative source of anthelmintics. Artemisia absinthium Linn. (Tethwen) is used traditionally by people as a vermifuge in addition to its other livestock uses. The objective of this study was to evaluate the anthelmintic efficacy of crude aqueous extracts (CAE) and crude ethanolic extracts (CEE) of the aerial parts of A. absinthium in comparison to albendazole against the gastrointestinal (GI) nematodes of sheep. To fulfill the objectives, the worm motility inhibition assay was utilized in order to investigate the direct effects of plant extracts on the survival of the adult nematodes under in vitro conditions and faecal egg count reduction assay to investigate the effects on faecal egg output of GI nematodes under in vivo conditions. Significant anthelmintic effects of CAE and CEE on live adult Haemonchus contortus worms (P < 0.005) were observed in terms of the paralysis and/or death of the worms at different hours post-treatment (PT), however, CEE were more efficacious than CAE. The oral administration of the extracts in sheep was associated with significant reduction in faecal egg output by the GI nematodes. The CEE was as effective as the reference drug-albendazole and demonstrated faecal egg count reduction (FECR) of 90.46% in sheep at 2.0 g kg(-1) body weight on day 15 PT followed by 82.85% FECR at 1.0 g kg(-1) bw on day 15 PT. The CAE showed less activity and resulted in maximum of 80.49% FECR at 2.0 g kg(-1)bw. Dosage had a significant (P < 0.05) influence on the anthelmintic efficacy of A. absinthium. The better activity of CEE can be attributed to the greater concentration of alcohol soluble active anthelmintic principle/s and a more rapid transcuticular absorption of the CEE into the body of the worms when compared with the CAE. The results of the present study suggest that A. absinthium extracts are a promising alternative to the commercially available anthelmintics for the treatment of GI nematodes of sheep.


Assuntos
Anti-Helmínticos/farmacologia , Artemisia absinthium/química , Hemoncose/veterinária , Haemonchus/efeitos dos fármacos , Extratos Vegetais/química , Extratos Vegetais/farmacologia , Albendazol/farmacologia , Animais , Fezes/parasitologia , Feminino , Hemoncose/tratamento farmacológico , Masculino , Ovinos , Doenças dos Ovinos/parasitologia
10.
Respir Med ; 150: 66-73, 2019 04.
Artigo em Inglês | MEDLINE | ID: mdl-30961953

RESUMO

Gastro-oesophageal reflux disease (GORD) has long been associated with poor asthma control without an established cause-effect relationship. 610 asthmatics (421 severe/88 mild-moderate) and 101 healthy controls were assessed clinically and a subset of 154 severe asthmatics underwent proteomic analysis of induced sputum using untargeted mass spectrometry, LC-IMS-MSE. Univariate and multiple logistic regression analyses (MLR) were conducted to identify proteins associated with GORD in this cohort. When compared to mild/moderate asthmatics and healthy individuals, respectively, GORD was three- and ten-fold more prevalent in severe asthmatics and was associated with increased asthma symptoms and oral corticosteroid use, poorer quality of life, depression/anxiety, obesity and symptoms of sino-nasal disease. Comparison of sputum proteomes in severe asthmatics with and without active GORD showed five differentially abundant proteins with described roles in anti-microbial defences, systemic inflammation and epithelial integrity. Three of these were associated with active GORD by multiple linear regression analysis: Ig lambda variable 1-47 (p = 0·017) and plasma protease C1 inhibitor (p = 0·043), both in lower concentrations, and lipocalin-1 (p = 0·034) in higher concentrations in active GORD. This study provides evidence which suggests that reflux can cause subtle perturbation of proteins detectable in the airways lining fluid and that severe asthmatics with GORD may represent a distinct phenotype of asthma.


Assuntos
Asma/complicações , Asma/metabolismo , Refluxo Gastroesofágico/complicações , Proteômica/métodos , Escarro/metabolismo , Adulto , Asma/epidemiologia , Asma/psicologia , Endopeptidases/metabolismo , União Europeia/organização & administração , Feminino , Refluxo Gastroesofágico/diagnóstico , Refluxo Gastroesofágico/epidemiologia , Humanos , Cadeias lambda de Imunoglobulina/metabolismo , Lipocalina 1/metabolismo , Masculino , Pessoa de Meia-Idade , Prevalência , Estudos Prospectivos , Inibidores de Proteases/metabolismo , Qualidade de Vida , Índice de Gravidade de Doença
11.
Vet Parasitol ; 158(1-2): 138-43, 2008 Nov 25.
Artigo em Inglês | MEDLINE | ID: mdl-18838225

RESUMO

The present study was conducted with the objective to investigate the seasonal epidemiological prevalence of gastrointestinal tract (GIT) nematodes in different age groups, sexes and breeds (genotypes) of sheep through necropsy and faecal analysis over a period of 2 years in Kashmir valley, India. A total of 1533 sheep were examined [faecal examination: 1035 (year 1: 561, year 2: 474); necropsy: 498 (year 1: 232, year 2: 266)]. Out of these, 945 (61.64%) were found infected [faecal examination: 697 (67.34%, year 1: 390 (69.51%), year 2: 307 (46.99%); necropsy: 248 (49.79%, year 1: 123 (53.01%), year 2: 125 (64.69%)] with GIT nematodes. The over all prevalence of GIT nematodes in sheep in year 1 was 64.76 and 58.37% in year 2 (P=0.04). The parasites in decreasing order of prevalence (%) in sheep were Haemonchus contortus (59.6); Ostertagia circumcincta (38.0); Bunostomum trigonocephalum (37.7); Chabertia ovina (37.7); Trichostrongylus spp. (33.9); Nematodirus spathiger (29.4); Oesophagostomum columbianum (28.4); Trichuris ovis (23.5) and Marshallagia marshalli (22.1). Season, sex, age, and genotype were the factors that influenced the epidemiological prevalence of GIT nematodes in sheep in the present study. The maximum nematode infection was observed in summer season and lowest in winter (P=0.0005). Local Kashmiri breed was less infected as compared to other genotypes (P>0.05). Lower age groups were more infected than adult animals (P>/=0.05). Prevalence was higher in rams (males) than eves (females) (P>0.05). The present study will initially be of great significance to add to the existing knowledge of the epidemiology of GIT nematodes of small ruminants and the findings will be quite helpful to devise the appropriate control and prophylactic strategies for GIT nematodiasis of sheep reared under the temperate agro-climatic conditions.


Assuntos
Criação de Animais Domésticos/métodos , Nematoides/isolamento & purificação , Infecções por Nematoides/veterinária , Doenças dos Ovinos/epidemiologia , Doenças dos Ovinos/parasitologia , Fatores Etários , Animais , Fezes/parasitologia , Feminino , Genótipo , Índia/epidemiologia , Masculino , Nematoides/classificação , Infecções por Nematoides/epidemiologia , Infecções por Nematoides/parasitologia , Contagem de Ovos de Parasitas/veterinária , Prevalência , Estações do Ano , Fatores Sexuais , Ovinos
12.
Vet Res Commun ; 32(5): 383-91, 2008 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-18357509

RESUMO

An epidemiological study with the objective to assess the prevalence of paramphistomosis in association with season, age, sex and breed was carried out in naturally infected sheep over a period of two years from February 2005 to January 2007. Gastrointestinal tract (GIT) and faecal examination were conducted monthly to monitor the seasonal occurrence of paramphistomosis. 793 sheep were examined in the first year, out of which 7.06% were positive for Paramphistomum infection. In the second year, 740 animals were investigated and 7.7% were infected. The overall prevalence of paramphistomosis was 7.3% with a mean of 56.50 +/- 0.50 and 95% confidence interval (CI) (lower bound: 50.1469; upper bound: 62.8531). The prevalence of paramphistomosis through GIT examination (P = 0.593) was 7.6% at 95% CI (lower bound: -19.1186; upper bound: 57.1186) and the prevalence through faecal examination (P = 0.884) was 7.2% at 95% CI (lower bound: 5.7345; upper bound: 69.2655). Generally, season and age were the factors found to have a significant influence on the risk of paramphistomosis in sheep. The highest infection was found in the summer season (P < 0.005); lower age groups (P < 0.005) in males and in migratory (Bhakarwal) breed (P >or= 0.005). Winter, adult animals, females and local breed reported low infection. The present study will be of great significance to understand the epidemiology of gastrointestinal helminthes of sheep initially in the resource poor communities of Himalayan region and will definitely be helpful to devise appropriate control strategies for paramphistomosis.


Assuntos
Gastroenteropatias/veterinária , Paramphistomatidae/isolamento & purificação , Doenças dos Ovinos/epidemiologia , Doenças dos Ovinos/parasitologia , Infecções por Trematódeos/veterinária , Fatores Etários , Animais , Fezes/parasitologia , Feminino , Gastroenteropatias/epidemiologia , Gastroenteropatias/parasitologia , Índia/epidemiologia , Masculino , Contagem de Ovos de Parasitas/veterinária , Prevalência , Estações do Ano , Ovinos , Infecções por Trematódeos/epidemiologia , Infecções por Trematódeos/parasitologia
13.
Mucosal Immunol ; 11(2): 404-414, 2018 03.
Artigo em Inglês | MEDLINE | ID: mdl-28677664

RESUMO

CX3CL1 has been implicated in allergen-induced airway CD4+ T-lymphocyte recruitment in asthma. As epidemiological evidence supports a viral infection-allergen synergy in asthma exacerbations, we postulated that rhinovirus (RV) infection in the presence of allergen augments epithelial CX3CL1 release. Fully differentiated primary bronchial epithelial cultures were pretreated apically with house dust mite (HDM) extract and infected with rhinovirus-16 (RV16). CX3CL1 was measured by enzyme-linked immunosorbent assay and western blotting, and shedding mechanisms assessed using inhibitors, protease-activated receptor-2 (PAR-2) agonist, and recombinant CX3CL1-expressing HEK293T cells. Basolateral CX3CL1 release was unaffected by HDM but stimulated by RV16; inhibition by fluticasone or GM6001 implicated nuclear factor-κB and ADAM (A Disintegrin and Metalloproteinase) sheddases. Conversely, apical CX3CL1 shedding was stimulated by HDM and augmented by RV16. Although fluticasone or GM6001 reduced RV16+HDM-induced apical CX3CL1 release, heat inactivation or cysteine protease inhibition completely blocked CX3CL1 shedding. The HDM effect was via enzymatic cleavage of CX3CL1, not PAR-2 activation, yielding a product mitogenic for smooth muscle cells. Extracts of Alternaria fungus caused similar CX3CL1 shedding. We have identified a novel mechanism whereby allergenic proteases cleave CX3CL1 from the apical epithelial surface to yield a biologically active product. RV16 infection augmented HDM-induced CX3CL1 shedding-this may contribute to synergy between allergen exposure and RV infection in triggering asthma exacerbations and airway remodeling.


Assuntos
Asma/imunologia , Linfócitos T CD4-Positivos/imunologia , Quimiocina CX3CL1/metabolismo , Miócitos de Músculo Liso/fisiologia , Infecções por Picornaviridae/imunologia , Mucosa Respiratória/fisiologia , Rhinovirus/imunologia , Proteínas ADAM/metabolismo , Remodelação das Vias Aéreas , Animais , Antígenos de Dermatophagoides/imunologia , Asma/virologia , Movimento Celular , Progressão da Doença , Células HEK293 , Humanos , NF-kappa B/metabolismo , Proteólise , Pyroglyphidae/imunologia , Mucosa Respiratória/virologia
14.
Oper Neurosurg (Hagerstown) ; 13(1): 108-112, 2017 02 01.
Artigo em Inglês | MEDLINE | ID: mdl-28931262

RESUMO

BACKGROUND: The potential for simulation-based learning in neurosurgical training has led the Congress of Neurosurgical Surgeons to develop a series of simulation modules. The Northwestern Objective Microanastomosis Assessment Tool (NOMAT) was created as the corresponding assessment tool for the Congress of Neurosurgical Surgeons Microanastomosis Module. The face and construct validity of the NOMAT have been previously established. OBJECTIVE: To further validate the NOMAT by determining its interrater reliability (IRR) between raters of varying levels of microsurgical expertise. METHODS: The NOMAT was used to assess residents' performance in a microanastomosis simulation module in 2 settings: Northwestern University and the Society of Neurological Surgeons 2014 Boot Camp at the University of Indiana. At Northwestern University, participants were scored by 2 experienced microsurgeons. At the University of Indiana, participants were scored by 2 postdoctoral fellows and an experienced microsurgeon. The IRR of NOMAT was estimated by computing the intraclass correlation coefficient using SPSS v22.0 (IBM, Armonk, New York). RESULTS: A total of 75 residents were assessed. At Northwestern University, 21 residents each performed microanastomosis on 2 model vessels of different sizes, one 3 mm and one 1 mm. At the University of Indiana, 54 residents performed a single microanastomosis procedure on 3-mm vessels. The intraclass correlation coefficient of the total NOMAT scores was 0.88 at Northwestern University and 0.78 at the University of Indiana. CONCLUSION: This study indicates high IRR for the NOMAT. These results suggest that the use of raters with varying levels of expertise does not compromise the precision or validity of the scale. This allows for a wider adoption of the scale and, hence, a greater potential educational impact.


Assuntos
Anastomose Cirúrgica/métodos , Competência Clínica , Educação Médica Continuada , Internato e Residência , Modelos Anatômicos , Neurocirurgiões/educação , Simulação por Computador , Feminino , Humanos , Masculino , Reprodutibilidade dos Testes
15.
Ochsner J ; 15(1): 52-7, 2015.
Artigo em Inglês | MEDLINE | ID: mdl-25829881

RESUMO

BACKGROUND: Thousands of healthcare mobile applications (apps) are available, and physicians are increasingly recognizing that mobile technology can improve their workflow and allow them to practice medicine in a better and/or more efficient manner. METHODS: This article highlights apps compatible with the iPhone and iPad and their utility to the busy orthopedic surgeon. RESULTS: Currently available apps address every aspect of healthcare: patient management, reference, education, and research. CONCLUSION: Key aspects of helpful apps include low cost (preferably free), a user-friendly interface, and simplicity.

16.
Neotrop Entomol ; 43(5): 437-45, 2014 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-27193954

RESUMO

Phytoseiid mites are considered the most effective natural enemies of pest mites. They also have been shown to attack pest thrips. It is unknown, however, whether phytoseiid mites can reduce high densities of Thrips flavidulus (Bagnall). We addressed this question by the study of functional and numerical responses. The aim of this research was to evaluate the potential predation success of the adults of three predatory mites, Neoseiulus cucumeris (Oudemans), Neoseiulus barkeri (Hughes), and Euseius nicholsi (Ehara & Lee), against the first-instar of T. flavidulus in a climatic chamber at five different temperatures. The results showed that the functional responses of those predators reflected the Holling type II functional response and were density dependent and positively related to temperature. For the three predatory mites, predation and successful attack rates increased with increasing temperature up to 26°C, reducing afterward. Handling time had the opposite trend. Reproductive ability also increased with an increase in temperature and prey consumption.


Assuntos
Ácaros , Controle Biológico de Vetores , Tisanópteros , Animais , Dinâmica Populacional , Comportamento Predatório , Temperatura
17.
J Parasit Dis ; 37(1): 88-93, 2013 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-24431547

RESUMO

Various anti-protozoal dugs have been popularly used in the treatment of goat coccidiosis; however, residual effects are well noticed in host animals. The present study was undertaken with the objective to evaluate the anticoccidial efficacy of Artemisia absinthium, as a safe alternative in comparison to two conventional anticoccidial drugs (toltrazuril and amprolium) in goats (Capra hircus) naturally infected with Eimeria spp. (>5,000 oocyst per gram of faeces). Goat kids (1-3 month old, 10 kg body weight) were randomly allocated into five groups (eight kids each). Group A was negative for coccidiosis and was retained as uninfected and untreated (negative control). Group B was infected and was kept untreated (positive control). Group C was given a single oral dose of toltrazuril (Baycox 5 %) at 20 mg kg(-1) BW (IM). Group D received amprolium soluble powder 20 w/w% at 50 mg kg(-1) BW 5 days daily. Group E was given a single dose of ethanolic extract of Artemisia absinthium at 2 g kg(-1) BW. Clinical signs, body-weight gain (BWG) and number of oocysts per gram faeces (OPG) were monitored daily for 30 days post treatment (DPT). The OPG was highly reduced as early as 7 DPT and there was a marked improvement in body weight gain (7 DPT) and faster clinical recovery (3-6 DPT) in the toltrazuril treated kids compared to amprolium and Artemisia absinthium treated groups (P ≤ 0.05). In Artemisia absinthium treated kids, the oocysts continued to be in faeces up to 28th day post treatment indicating that ethanolic extract of herb was less efficacious against caprine coccidiosis as compared to amprolium and toltrazuril. From the observations of the present study it can be concluded that control of goat coccidiosis through single treatment of toltrazuril was highly effective as compared to the other two treatments. However, integrated control involving pasture management, chemical and herbal control will be a more realistic and sustainable means of controlling coccidiosis in goats. Further studies at different doses and concentrations using different solvent preparations of the plant extract are recommended to arrive at a certain conclusion about the anti-coccidial efficacy of Artemisia absinthium, which has been reported to be highly effective against other parasites in ruminants.

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